65537 | C # program for above approach ; Function to find the nth 65537 - gon Number ; Driver code
using System ; class GFG { static int gonNum65537 ( int n ) { return ( 65535 * n * n - 65533 * n ) / 2 ; } public static void Main ( String [ ] args ) { int n = 3 ; Console . Write ( gonNum65537 ( n ) ) ; } }